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Official casework recordDismissedCurrent release

Appeal 3314942

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Official decision document

The decision, section by section

7 sections

Read the development description and the Inspector’s text from the official decision PDF in source order. Source headings are retained where available. Personal and contact details are removed by an automated privacy filter; this is source material, not Rules for You analysis.

Section 01

Development description

a single storey rear extension Single storey rear extension measuring a depth of 8 metres, maximum height of 3.84 metres and an eaves height of 3 metres.

  1. Section 02

    Decision

    The appeal is dismissed.

  2. Section 03

    Preliminary Matters

    Under Article 3(1) and Schedule 2, Part 1, Class A of the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended (the Order), planning permission is granted for the enlargement of a dwellinghouse subject to limitations and conditions.

    Where an application is made for a determination as to whether prior approval is required for development which exceeds the limits in paragraph A.1(f) but is allowed by paragraph A.1(g) to Part 1, paragraph A.4(3) provides that the local planning authority may refuse the application where it considers that the proposed development does not comply – or that the developer has provided insufficient information to enable the authority to establish whether the proposed development complies with the conditions, limitations or restrictions that are applicable to such permitted development.

  3. Section 04

    [name]

    The main issues in the appeal are: • Whether the proposed development satisfies the requirements of the Town & Country (General Permitted Development) (England) Order 2015 with regard to being permitted development under the above Order. • And if so, whether planning permission is deemed to have been granted.

  4. Section 05

    Permitted development

    The appeal property is a two-storey detached dwellinghouse. The original rear wall of the property has a projecting bay window that extends from the ground level up to an including the first-floor level. Although it has been surrounded by an existing single storey rear extension, as I observed on my site visit, it remains in situ internally. There are similar features to surrounding properties and it is not in dispute that it is an original feature of the property.

    [name].1(j) of Class A of the Order outlines that development is not permitted by Class A if, amongst other things, the enlarged part of the dwellinghouse would extend beyond a wall forming a side elevation of the original dwellinghouse and would have a width greater than half the width of the original dwellinghouse.

    The Council considered in their assessment of the application that the projecting bay window forms part of a side elevation of the original dwellinghouse, and that the extension would have a width greater than half the width of the original dwellinghouse and thus would not constitute permitted development.

    The Permitted development rights for householders - Technical Guidance (MHCLG 2019) identifies a side elevation will be any wall that cannot be identified as being a front wall or a rear wall. It also states that that houses will often have more than two side elevation walls. The diagrams that follow within the Technical Guidance do not show the same circumstances as the current case. I therefore consider that it is a matter of planning judgement, on the facts of a particular case, what constitutes a side elevation on any dwellinghouse taking into account the guidance in the Technical Guidance.

    It is the case that a very short and/or shallow wall could constitute a ‘side wall’ for the purposes of the Order. The only possible exception would be if it was found, as a matter of fact and degree, that the protrusion was too shallow to constitute a wall. A window sill, for example, would not normally constitute a side wall, but a projection in the brickwork might be identifiable as such.

    The bay at the appeal property is three sided and is of a solid construction with glazing above. The submitted plans show that it projects around 1.1 metres from the flat section of the rear elevation. The submitted plans also show that this projection contributes, not insignificantly, to the floor area of the rooms where it is located. Although its projection is less than 90 degrees to the flat section of the rear elevation, it is greater than 45 degrees. Therefore, the side elevations of the bay are angled more towards the sides of the property than the rear. The submitted ‘side elevation’ plan also clearly shows the first-floor element of the bay window at the rear. Taking these factors into account, this projection, as a matter of fact and degree, forms part of the side elevation of the property and would not be a rear wall.

    The appellant has referred to part of the Technical Guidance which outlines that the principal elevation of a property could include more than one wall facing in the same direction - for example, where there are large bay windows on the front elevation. The guidance outlines that in such cases, all such walls will form the principal elevation. This does not however appear to also include the sides of any such projection as shown in the relevant diagram. Even if this were to be the case, it is applicable only to the principal elevation and does not relate to the rear elevation or the part of the Order which is relevant to this appeal. This part of the Guidance is not, therefore, directly relevant to the appeal proposal and I give it limited weight.

    In the proposed development, it would extend beyond the projecting bay window, part of which forms a side elevation of the original dwellinghouse. The extension would have a width greater than half the width of the original dwellinghouse. The proposed development is therefore not permitted under Schedule 2, Part 1, Class A of the Order.

  5. Section 06

    Other Matters

    The appellant has referred to previous appeal decisions1 whereby Inspectors have considered that the projection of a bay window would not constitute forming part of a side elevation. One of these decisions refers to a previous appeal2 decision whereby an Inspector considered that the projection of a bay window did constitute forming part of a side elevation.

    In the [address] appeal, the Inspector describes the bay window as being glazed to ground level which is different to the solid construction at the lower portion of the bay window at the appeal property. The evidence also does not outline the angle of projection. In the [name] appeal the Inspector outlines how the bay projects at approximately 45 degrees and extends about 0.8 metres. This is different to the bay window at the appeal property on both counts as outlined above.

    Therefore, although the above appeals are similar insofar as they concern bay windows, they are however different to the bay window at the appeal property in terms of design and construction. I have had regard to these decisions; however, I have come to my own conclusion on the issue based on the individual merits of the case.

    The appellant has also referred to a certificate of lawfulness granted at the neighbouring property. [name] do not have full details of the case, it relates to an application submitted under a separate procedure. When taken against the application subject to the appeal, an element of inconsistency may exist, however the timescales, over 7 years apart, would be reasonable to reflect a revision to decision making on such matters. It does not alter my assessment given above, and I therefore give it limited weight in the appeal.

    The appellant outlines how they have had dialogue with various individuals on the matter who share their view that the bay window does not form a side elevation. Such anecdotal evidence is however of limited weight.

    The appellant considers that the Council’s approach in refusing consent hinders the permitted development rights of households and flies in the face of the spirit of the Order by unreasonably restricting valid permitted development rights. [name] have found that the proposed development would not accord with the limitations of the Order, these matters would not be a reason to allow the appeal.

    The fact that the Council has not legally challenged any previous appeal decisions also does not provide a reason to allow the appeal. 1 APP/N5090/D/17/3170532 and APP/N5090/D/21/3284504 2 APP/N5090/D/18/3208435

  6. Section 07

    Conclusion

    The proposed development is therefore not permitted under Schedule 2, Part 1, Class A of the Order. For the reasons given above, and having had regard to all other matters raised, it is concluded that the appeal should be dismissed.

Planning inspector and document dates

The official casework attribution is grouped under a one-way keyed hash and shown only by its local identifier. Decision-letter dates and page references are extracted by fixed first-page rules and checked against that authoritative record.

  • Appeal Decision

    Extracted inspector · page 1
    Inspector attribution ID 145No official casework-database value to compare
    Extracted decision date · page 1
    26 April 2023Matches the official casework database
    Extracted site visit dates
    24 March 2023 (page 1)

Reference and authority

Official identifiers and the planning authority recorded against this case.

Case reference
3314942
Application reference
22/5497/PNH
Lead case reference
Not recorded
Planning authority
London Borough of Barnet
Planning authority code
E09000003

Casework details

The casework, procedure, development and linking details supplied by the official record.

Casework type
Householder (HAS)
Procedure
Written Representations
Development type
Householder developments
Appeal type reason
3. Refused prior approval of permitted development rights
Appeal reason
Refusal
Type detail
Planning Appeals - Full
Jurisdiction
Transferred
Link status
Not Linked

Site and development

Published appeal-site measurements and planning designations, without the withheld precise location fields.

Site area
Not recorded
Floor space
40 m²
Number of residences
0
Site in Green Belt
No
Agricultural holding
No
Affects setting of a listed building
Not recorded
Historic building grant made
Not recorded
Relates to a conservation area
Not recorded
Flooding is an issue
Not recorded
Site within an AONB
Not recorded
Site within an SSSI
Not recorded

Decision and dates

The published outcome and every imported case date.

Official decision
Dismissed
Decision category
Dismissed
Received date
18 January 2023
Valid date
22 January 2023
Start date
14 February 2023
Planning authority decision date
14 December 2022
Appeal decision date
26 April 2023

Case administration

Published recovery, call-in, costs and enforcement information for this case.

Redetermined
No
Bespoke
No
Date recovered
Not recorded
Date not recovered or derecovered
Not recorded
Call-in date
Not recorded
Costs applied for
Not recorded
Enforcement grounds count
Not recorded
Enforcement grounds
Not recorded

Source and catalogue history

When this record appeared in the rolling official release and when the catalogue stored it.

Source
Planning Inspectorate casework database
Source data system
Horizon
Dataset status
Current release
Catalogue record ID
31826
First seen
20 August 2026 at 14:24
Last seen
20 August 2026 at 16:26
Removed from release
Not recorded
Record created
20 August 2026 at 14:24
Record updated
24 August 2026 at 16:21